Equipment for strengthening muscles



FIG. 1 is a perspective view of an equipment for strengthening muscles showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a perspective view of the equipment for strengthening muscles where the equipment for strengthening muscles is in a configuration of use;

FIG. 10 is a front elevational view of the equipment for strengthening muscles where the equipment for strengthening muscles is in the configuration of use;

FIG. 11 is an enlarged view of portion 11 shown in FIG. 1;

FIG. 12 is an enlarged view of portion 12 shown in FIG. 1; and,

FIG. 13 is an enlarged view of portion 13 shown in FIG. 2.

The broken lines in the drawings depict portions of the equipment for strengthening muscles that form no part of the claimed design. 

CLAIM The ornamental design for an equipment for strengthening muscles, as shown and described. 